In terms of precipitation, rainfall in Trenton, New Jersey ranges from 2.9 - 4.8 inches per month. July is typically the wettest month, when rainfall can reach 4.8 in. February is typically the driest time to visit Trenton, New Jersey when rainfall is around 2.9 in.

If weather is an important factor for your trip to Trenton, New Jersey, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

How far in advance should I book a flight from Seattle to Trenton, New Jersey?

To save up to 107% on this flight, we recommend booking at least 61 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Seattle to Trenton, New Jersey from $418 1-2 weeks out and tickets from $682 for flights departing within the next 72 hours.

What is the cheapest month to fly from Seattle to Trenton, New Jersey?

Flights from Seattle to Trenton, New Jersey lean towards being more expensive in December. Prices are generally better when you fly from Seattle to Trenton, New Jersey in January, with the cheapest ticket starting at $230.

Can I find deals for flights from Seattle to Trenton that include hotel bookings?

Yes. In addition to deals on Seattle to Trenton flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Seattle to Trenton?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Trenton.

Can I find deals for business class flights from Seattle to Trenton?

Yes. Cheapflights offers flight deals from Seattle to Trenton by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$217+ Flights from Seattle to Trenton, NJ

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Cheap flight deals from Seattle to Trenton

Popular in	December
Cheapest in	January
Average price	$469

Highest demand for flights based on searches. 1% potential increase in price ($5 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find flight deals from Seattle to Trenton

Cheapest flights from Seattle to Trenton
Explore the most affordable flight options available from Seattle to Trenton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Sat 7/127:48 pmSEA - TTN

2 stops12h 18mFrontier

Fri 7/1812:48 pmTTN - SEA

2 stops14h 46mFrontier

Deal found 7/1

$610

Last-minute flights from Seattle to Trenton
Discover last-minute flight deals from Seattle to Trenton. Data last updated July 3, 2025 and is based on user searches.

Sat 7/127:48 pmSEA - TTN

2 stops12h 18mFrontier

Fri 7/1812:48 pmTTN - SEA

2 stops14h 46mFrontier

Deal found 7/1

$610

One-way flights from Seattle to Trenton
Search for one-way flight options from Seattle to Trenton. Find affordable one-way fares based on user searches. Data last updated July 3, 2025.

Fri 8/18:01 pmSEA - TTN

2 stops17h 47mFrontier

Deal found 7/2

$217

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Trenton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleTrenton

SEA - TTN

SEATTN

Seattle/Tacoma Intl

Fri 8/1

8:01 pm-4:48 pm

2 stops17h 47m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Best time to book a flight from Seattle to Trenton

Have a flexible travel schedule? Discover the best time to fly to Trenton from Seattle with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Trenton

What is the cheapest month to book a flight from Seattle to Trenton, New Jersey?

Currently, January is the cheapest month in which you can book a flight from Seattle to Trenton, New Jersey (average of $73). Flying from Seattle to Trenton, New Jersey in June is currently the most expensive (average of $153). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to TTN?

When flying from Seattle to Trenton, New Jersey, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Trenton

See what other customers who have flown with Frontier from Seattle to Trenton have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Frontier

5.9

Fair

3,284 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Jun 2025

TTN - TPA

TTN is a small airport for Frontier. Drop off is easy as is parking. The location is remote so there is zero traffic. The place could use a renovation but for the price you pay it is not necessary. Good-Staff is very friendly. Flight left on time. Bad- run down, deplaning/boarding on the tarmac. I got wet on the stairs outside of the plane while waiting to board.

Frontier

5.9

Fair

3,284 reviews

Frontier

5.9

Fair

3,284 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Jun 2025

TTN - TPA

Related info for your journey

Can I find deals for flights from Seattle to Trenton that include hotel bookings?
Yes. In addition to deals on Seattle to Trenton flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Seattle to Trenton?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Trenton.
Can I find deals for business class flights from Seattle to Trenton?
Yes. Cheapflights offers flight deals from Seattle to Trenton by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Seattle to Trenton, New Jersey?
Currently, January is the cheapest month in which you can book a flight from Seattle to Trenton, New Jersey (average of $73). Flying from Seattle to Trenton, New Jersey in June is currently the most expensive (average of $153). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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$217+ Cheap flights from Seattle to Trenton, NJ (SEA - TTN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/1. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to Trenton with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Seattle to Trenton

Popular in

Cheapest in

Average price

Find flight deals from Seattle to Trenton

Cheapest flights from Seattle to TrentonExplore the most affordable flight options available from Seattle to Trenton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Explore the most affordable flight options available from Seattle to Trenton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Trenton that are best for you.

Best time to book a flight from Seattle to Trenton

Have a flexible travel schedule? Discover the best time to fly to Trenton from Seattle with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Trenton

What is the cheapest month to book a flight from Seattle to Trenton, New Jersey?

What is the cheapest time of day to fly from SEA to TTN?

Find hourly flight availability from Seattle to Trenton. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 3, 2025.

Reviews of airlines servicing Trenton

See what other customers who have flown with Frontier from Seattle to Trenton have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Trenton. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from Seattle to Trenton that include hotel bookings?

How can I find direct flights from Seattle to Trenton?

Can I find deals for business class flights from Seattle to Trenton?

What is the cheapest month to book a flight from Seattle to Trenton, New Jersey?

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Cheapest flights from Seattle to Trenton
Explore the most affordable flight options available from Seattle to Trenton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.